Answer please q6

K The following table indicates the supply schedules for four types of producers: A, B, C, and D and the number of producers in each group (top row). The quantity supplied by each type of producer (QA, Qe, Qo, and Qo) is shown for market prices ranging from $8 down to $2. What is the combined quantity supplied at a market price of $4? Number of producers A = 50 B = 60 C = 30 D = 20 Market Price QA QB Qc Qo $8 14 13 12 10 INWAWON O-NWAUO NODOON -WUNOT O A. 650 O B. 640 O C. 16 O D. 2,600